AS250-8-552
Cell Aluminium-Sandwich Bass
Dome material | Aluminium-Sandwich |
Application | Bass |
Overall diameter | 250 MM |
Cutout Diameter | 230 MM |
Overall depth | 141 MM |
Motor assembly depth | 56.5 MM |
Motor assembly diameter | 210 MM |
Main Features
Full featured cell concept
Ideal acoustic center
No compression design
Proprietary motor system
20 HZ - 600 HZ in vented Box
Technology
3D Model
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The AS250-8-552 is an 11 inch bass driver with aluminum honeycomb sandwich dome, being the first in an entirely new approach to accuton speaker design. An ideal acoustical center has been achieved, which is identical with our CELL tweeters and midranges. Its novel designed overhung motor combines the advantages of traditional over- and underhung designs, delivering high linear excursion and ultra low distortion. An exceptionally hard aluminum sandwich dome was developed for the CELL bass drivers that allows for negligible delay and energy storage. The hidden surround serves for reduced outer diameter and linear excursion of +/- 16mm. A new developed spider shape makes huge excursion without compression possible.
We recommend our AS250-8-552 for an application from 20 Hz - 600 Hz.
VENTED BOX DESIGN PARAMETERS
Vb: 60L, Port diameter: 100mm, Length: 440mm, Fres: 27Hz, F-3dB: 30Hz, Q: 0.58 (optimal)
Vb: 80L, Port diameter: 100mm, Length: 280mm, Fres: 28Hz, F-3dB: 28Hz, Q: 0.50 (extended bass)
CLOSED BOX DESIGN PARAMETERS
Vb: 30L, -9dB @ 30Hz, F-3dB: 51Hz, Q: 0.71 (typical)
Vb: 80L, -7dB @ 30Hz, F-3dB: 55Hz, Q: 0.50 (extended bass)
Mechanical Data
Specification | Value | Unit | |
Overall diameter | 250 | mm | |
Cutout diameter | 230 | mm | |
Min. frontplate thickness | 18 | mm | |
Overall depth | 141 | mm | |
Motor assembly depth | 56.5 | mm | |
Motor assembly diameter | 210 | mm | |
Screwfitting | DIN 7984 / Ø 4.50 | mm | |
Terminal | +: 6.3 x 0.8 / -: 4.8 x 0.8 | mm | |
Shipping weight (pair) | 23 | Kg | |
Shipping box size (pair) | 320/320/450 | mm | |
Thiele Small Parameters
Specification | Value | Unit | |
Sensitivity (2.83V / 1m) | Spl | 87 | dB |
DC-resistance | Re | 7.30 | Ohm |
Resonance frequency | Fs | 20,31 | Hz |
Equivalent volume of air | Vas | 155,55 | ltr |
Mechanical Q | Qms | 3,80 | |
Electrical Q | Qes | 0.38 | |
Total Q | Qts | 0.35 | |
Effective piston area | Sd | 397,61 | Cm2 |
Moving mass | Mms | 88,55 | g |
Suspension compliance | CMs | 0.69 | mm/n |
Mechanical resistance | Rms | 2.98 | Ns/m |
voice coil parameters
Specification | Value | Unit | |
Power handling | P | 300 | W |
Linear excursion | Xmax | +/-9 | mm |
Voice coil diameter | 114 | mm | |
Voice coil former material | Ti | ||
Voice coil material | Cu | ||
Voice coil inductance | Le | 0.42 | mH |
Force factor | Bl | 14.70 | Tm |
Motor type | Overhung | ||
Ferrofluid filling | No | ||